(a)
Interpretation:Barium to be identified as an alkali metal, alkaline earth metal, or halogen.
Concept introduction:
The periodic table is a columnar structure that organizes different elements into groups based on how they behave. The elements in the periodic table of today are ordered according to the periodic law. The elements are organized in the modern periodic table in increasing order of their
(a)
Answer to Problem 14LC
Alkaline earth metal
Explanation of Solution
The atomic number of Barium is 56 and itsouter shell electronic configuration is,
The last electron in the s-subshell, so it is ans-block element. The outer shell or highest occupied energy level contains2electrons; thus, it belongs to group 2A. The group 2A elements are called alkaline earth metals.
Thus, Barium is an alkaline earth metal.
(b)
Interpretation:Lithium to be identified as an alkali metal, alkaline earth metal, or halogen.
Concept introduction:
The periodic table is a columnar structure that organizes different elements into groups based on how they behave. The elements in the periodic table of today are ordered according to the periodic law. The elements are organized in the modern periodic table in increasing order of their atomic number.
(b)
Answer to Problem 14LC
Alkali metal
Explanation of Solution
The atomic number of Lithium is 3 and itsouter shell electronic configuration is,
The last electron in the s-subshell, so it is ans-block element. The outer shell or highest occupied energy level contains 1 electron; thus, it belongs to group 1A. The group 1A elements are called alkali metal
Thus, Lithium is an alkali metal.
(c)
Interpretation:Chlorine to be identified as an alkali metal, alkaline earth metal, or halogen.
Concept introduction:
The periodic table is a columnar structure that organizes different elements into groups based on how they behave. The elements in the periodic table of today are ordered according to the periodic law. The elements are organized in the modern periodic table in increasing order of their atomic number.
(c)
Answer to Problem 14LC
Halogen
Explanation of Solution
The atomic number of Chlorine is 17 and itsouter shell electronic configuration is,
The last electron in the p-subshell, so it is a p-block element. The outer shell or highest occupied energy level contains 7electrons; thus, it belongs to group 7A. The group 7A elements are called halogens
Thus, chlorine is a halogen.
(d)
Interpretation:Berylliumis to be identified as an alkali metal, alkaline earth metal, or halogen.
Concept introduction:
The periodic table is a columnar structure that organizes different elements into groups based on how they behave. The elements in the periodic table of today are ordered according to the periodic law. The elements are organized in the modern periodic table in increasing order of their atomic number.
(d)
Answer to Problem 14LC
Alkaline earth metal
Explanation of Solution
The atomic number of Beryllium is 4 and itsouter shell electronic configuration is,
The last electron is in the s-subshell, so it is ans-block element. The outer shell or highest occupied energy level contains 2electrons; thus, it belongs to group 2A. The group 2A elements are called alkaline earth metals
Thus, beryllium is an alkaline earth metal.
Chapter 6 Solutions
Chemistry 2012 Student Edition (hard Cover) Grade 11
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